Device for stretching wire around wooden pipes.



G. W. SUTHERLAND.

' DEVICE FOR STRETCHING WIRE AROUND WOODEN PIPES.

' APPLICATION FILED AUG.i9. 1914.

1,154,275, Patented Sept. 21, 1915.

Elie

E ml t GEORGE W. SUTHERLA ND, OF NEWPORT, VJASHINGTON.

DEVICE FOR STREYICHING WIRE AROUND 'WOODEN PIPES.

Specification of Letters Patent,

Patented dept.

Application filed August 19, 1914. Serial No. 857.577.

I Y j 10 ml whom. it may concern Be it known that I, Gnouon Vt. SUTHER- LAND, a citizen of the United States, resid-* ing at Newport, in the county of Pend- ()reille and State of Vashington, have invented new and useful Improvements in Devices for Stretching Wire Around l/Voodenlipes, of which the following is a specification.

The present invention relates to improvements in wire stretching devices.

The improven'ient consists in the construction. combination and operative arrange ment of parts set forth in the following specification and falling within the scope of the appended claims.

In the drawings: Figure 1 is a perspective view of my improved stretcher, Fig. 2 is a central vertical longitudinal sectional view through the same, Figv 3 is a transverse sectional view approximately on the line of Fig. 2, and Fig. 4-. is a detail longitudinal sectional view on the line -of Fig.1.

In wooden. tubes, or likestructures, which are generally constructed of staves, or sections, it is necessary that the same be reinforced by suitable bands, the said hands being ordinarily in. the nature of metal straps which are bent to conform to the shape of the wooden tube and have their ends one overlapping the other and connected by rivets or the like. In wooden forms, such as molds for concrete. some effective means must also be provided for holding the sections' of the form, as the said sections are subiected to great strain by the plastic material being tamped within the same. In a great number of tubular forms or members. it is essential that the bracing or reinforcing member be subjectto tightening.

when the tube is contracted by weather conditions. and it is also essential that the reii'iforcing band he so arranged as to be read ilv removed from the tube when desired, as for instance, when the form is to be removed when the plastic material is thoroughly dry and hard or when repairs are to be made to the tube and for other reasons.

- In carrying out my invention I employ a puller or stretcher member 7. The member o 1 includes a head h ha\ mg an outer smooth tat-.e'provided upon one end with an outturned hp 9. the head 8 having a rounded extension 10 which may be reduced and threaded, as at ll. The rounded member 10' as well as the threaded men'iber 11 1s a hollow handle 17.

connected with the handle.

provided with a ltmgitudinaliy extending opening 12, and the threads 11 coact with similar threads in the hub 13 of: a beveled toothed wheel Ll. the inner face of the said wheel. being provided w th an annular angular flange which is l ceived within. an inturned flange or bead it provided upon The handle is cast as a whole or in sections. the said sections being secured together in any desired or pre ferred manner, and by arranging the said sections with the head 16 engaging the flange 15, the toothed wheel 14 is rotatably The handle is provided with a slot or opening 18, the opposite longitudinal wallsof which are formed with out-turned ears- 19, while pivoted between the said ears, asuat 20, is a cam lever 21., the cam head of said lever being arranged Within the hollow handle 17.

Arranged at a right angle to the longitudinal opening 18, at the end of said handle provided with the toothed wheel 141-, is a pivot 22, the same securing the bifurcated end 23 of the lever 24 to the handle 17. Arranged between the bifurcated arms of the lever and journaled upon the pivot 22 is a beveled. tooth wheel 25 which meshes with the toothed .wheel 14, and also arranged between the bifurcated arms of the said lever and pivoted thereto, as at 26, is a substantially U-shaped dog 27 which may be in fluenced by a spring 28 to retain either one ot'its engaging ends between two of the teeth of the wheel 25. The free end of a wire 6 is passed through the opening 12 in the longitudinally mov able headed member 5%. the same being brought below the cam face of the lever 21, and the section of the hollow handle opposite the cam fare may be provided with teeth 28', while the cam head of the said lever may also be provided with teeth 29, the end of the. wire (3 being arranged be tween the said teeth and the cam lever operated to secure the said end of the,wire

within the. hollow handle. The dog 27 is swung to bring one of its engaging ends between two of the teeth of the wheel 25. The lever is then rothted upon its pivot 22, rotating the beveled tooth wheel l4 and causing the screw l'l to be forced outwardly of the handh- 17. thus enlarging or lengthem ing the stretcher. and as a consequence drawing the looped wire (3 sul'liciently taut. lV hen the wire is brought to such a condition, the lip 9'of the head 8 is brought into engagement with'the support for the wire,

the saidsupport providing a fulcrum, and

' the stretcher is swung upon the said fulcrum until the wire is bent or stretched.

From the above description, taken in connection with the accompanying drawings,

' the simplicity of the device as Well as the advantages thereof 'will, it is thought, be perfectly apparent to those skilled in the art to which such invention appertains withbutfurther detailed description. 1

Having thus described the invention, what I claim is:

L A wire stretching, device including a head having a threaded extension and having an" o ening through the head and through "-te, threaded extension through which the" end of the wire may be passed, a

hollow. handle j having a beveled toothed wheel rotatably connected therewith, said wheelhaving a hub provided with a thread- "ed bore which engages with the threaded ex tension of the head", a lever having a cam head arranged within the hollow handle and adapted to engage with the',wire end, and

means for rotating'the'beveled tooth wheel to reciprocate the threaded member of the head within the hollow handle.

2. In a wire stretcheras herein described,

ahe'aded member-provided with a lip and I bein formed:with an angularly disposed tubu at threaded extension, the head having an opening communicating with the bore of the tubular extension and the said openings being adapted tofreceive one end of a wire which may beqpassed through the tubular extension, a hollow handle having a toothed wheel r'otatably' connected therewith, said wheel havingathreaded bore which receives the threaded'tubular. member of the head, a'

lever havinga earn. head arranged within the handle and adapted to engage with the Wire projecting through .the tubular member of the head to within the handle, a second one of its ends formed with an inturned' annular bead, the said handle having a longitudinal opening and ears arranged upo'n the opposite walls of the opening, a lever pivoted'between the ears, said lever having a cam head provided with teeth, the bore of the'handle "apposite the lever being also formed with teeth, a toothed wheel having its outer face provided with a hub and its inner face provided with an annularangular extension which is arranged within the tubular handle and engaged by the bead thereof, the bore of thehub being threaded, a lever having a bifurcated end pivotally connected with the handle, a toothed wheel meshing with the first-mentioned toothed wheel arranged within the bifurcation of the lever,

an arcuate dog having two engaging faces pivoted within the bifurcation of the handle,

a spring for the dog, and the said dog adapte ed to be engaged between the teeth of the wheel carried by the lever, a threaded mem ber e oacting withthe threads in the bore of the hub; of the first-mentioned wheel, a head for the member, and an offset lip upon the head, said member and head being provided with afwire-receiving opening. In testimony whereof]: affix my signature in presence. of two witnesses;

GEORGE W. SUTHERLAND.

Witnesses: I 0. C. NELSON,

CH STER A, Gnovnn Copies oi. this patent may be obtained for five cents each, by addressin g'the Commissioner (if ratents,

Washington, D. C. 

